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Jiang W, He J, Babla M, Wu T, Tong T, Riaz A, Zeng F, Qin Y, Chen G, Deng F, Chen ZH. Molecular evolution and interaction of 14-3-3 proteins with H+-ATPases in plant abiotic stresses. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:689-707. [PMID: 37864845 DOI: 10.1093/jxb/erad414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 10/20/2023] [Indexed: 10/23/2023]
Abstract
Environmental stresses severely affect plant growth and crop productivity. Regulated by 14-3-3 proteins (14-3-3s), H+-ATPases (AHAs) are important proton pumps that can induce diverse secondary transport via channels and co-transporters for the abiotic stress response of plants. Many studies demonstrated the roles of 14-3-3s and AHAs in coordinating the processes of plant growth, phytohormone signaling, and stress responses. However, the molecular evolution of 14-3-3s and AHAs has not been summarized in parallel with evolutionary insights across multiple plant species. Here, we comprehensively review the roles of 14-3-3s and AHAs in cell signaling to enhance plant responses to diverse environmental stresses. We analyzed the molecular evolution of key proteins and functional domains that are associated with 14-3-3s and AHAs in plant growth and hormone signaling. The results revealed evolution, duplication, contraction, and expansion of 14-3-3s and AHAs in green plants. We also discussed the stress-specific expression of those 14-3-3and AHA genes in a eudicotyledon (Arabidopsis thaliana), a monocotyledon (Hordeum vulgare), and a moss (Physcomitrium patens) under abiotic stresses. We propose that 14-3-3s and AHAs respond to abiotic stresses through many important targets and signaling components of phytohormones, which could be promising to improve plant tolerance to single or multiple environmental stresses.
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Affiliation(s)
- Wei Jiang
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
| | - Jing He
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
| | - Mohammad Babla
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
| | - Ting Wu
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia
| | - Tao Tong
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Adeel Riaz
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Fanrong Zeng
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Yuan Qin
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Guang Chen
- Central Laboratory, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China
| | - Fenglin Deng
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia
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2
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Jia B, Cui H, Zhang D, Hu B, Li Y, Shen Y, Cai X, Sun X, Sun M. The conserved evolution of plant H +-ATPase family and the involvement of soybean H +-ATPases in sodium bicarbonate stress responses. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 204:108133. [PMID: 37883915 DOI: 10.1016/j.plaphy.2023.108133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/11/2023] [Accepted: 10/21/2023] [Indexed: 10/28/2023]
Abstract
Plant plasma membrane (PM) H+-ATPases are essential pumps involved in multiple physiological processes. They play a significant role in regulating pH homeostasis and membrane potential by generating the electrochemical gradient of the proton across the plasma membrane. However, information on soybean PM H+-ATPase is still limited. In this study, we conducted the evolutionary analysis of PM H+-ATPases in land plants and investigated the subfamily classification and whole genome duplication of PM H+-ATPases in angiosperms. We further characterized the extremely high conservation of the soybean PM H+-ATPase family in terms of gene structure, domain architecture, and protein sequence identity. Using the yeast system, we confirmed the highly conserved biochemical characteristics (14-3-3 binding affinity and pump activity) of soybean PM H+-ATPases and their conserved function in enhancing tolerance to high pH and NaHCO3 stresses. Meanwhile, our results also revealed their divergence in the transcriptional expression in different tissues and under sodium bicarbonate stress. Finally, the function of soybean PM H+-ATPases in conferring sodium bicarbonate tolerance was validated using transgenic Arabidopsis. Together, these results conclude that the soybean PM H+-ATPase is evolutionarily conserved and positively regulates the response to sodium bicarbonate stress.
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Affiliation(s)
- Bowei Jia
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Key Laboratory of Germplasm Enhancement, Physiology, and Ecology of Food Crops in Cold Region, Ministry of Education, Northeast Agricultural University, Harbin, 150030, China
| | - Hongli Cui
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Dajian Zhang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Bingshuang Hu
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Yuan Li
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Yang Shen
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Xiaoxi Cai
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Xiaoli Sun
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
| | - Mingzhe Sun
- Crop Stress Molecular Biology Laboratory, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
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3
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Kinoshita SN, Suzuki T, Kiba T, Sakakibara H, Kinoshita T. Photosynthetic-Product-Dependent Activation of Plasma Membrane H+-ATPase and Nitrate Uptake in Arabidopsis Leaves. PLANT & CELL PHYSIOLOGY 2023; 64:191-203. [PMID: 36705265 PMCID: PMC9977229 DOI: 10.1093/pcp/pcac157] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/22/2022] [Accepted: 11/08/2022] [Indexed: 06/18/2023]
Abstract
Plasma membrane (PM) proton-translocating adenosine triphosphatase (H+-ATPase) is a pivotal enzyme for plant growth and development that acts as a primary transporter and is activated by phosphorylation of the penultimate residue, threonine, at the C-terminus. Small Auxin-Up RNA family proteins maintain the phosphorylation level via inhibiting dephosphorylation of the residue by protein phosphatase 2C-D clade. Photosynthetically active radiation activates PM H+-ATPase via phosphorylation in mesophyll cells of Arabidopsis thaliana, and phosphorylation of PM H+-ATPase depends on photosynthesis and photosynthesis-related sugar supplementation, such as sucrose, fructose and glucose. However, the molecular mechanism and physiological role of photosynthesis-dependent PM H+-ATPase activation are still unknown. Analysis using sugar analogs, such as palatinose, turanose and 2-deoxy glucose, revealed that sucrose metabolites and products of glycolysis such as pyruvate induce phosphorylation of PM H+-ATPase. Transcriptome analysis showed that the novel isoform of the Small Auxin-Up RNA genes, SAUR30, is upregulated in a light- and sucrose-dependent manner. Time-course analyses of sucrose supplementation showed that the phosphorylation level of PM H+-ATPase increased within 10 min, but the expression level of SAUR30 increased later than 10 min. The results suggest that two temporal regulations may participate in the regulation of PM H+-ATPase. Interestingly, a 15NO3- uptake assay in leaves showed that light increases 15NO3- uptake and that increment of 15NO3- uptake depends on PM H+-ATPase activity. The results opened the possibility of the physiological role of photosynthesis-dependent PM H+-ATPase activation in the uptake of NO3-. We speculate that PM H+-ATPase may connect photosynthesis and nitrogen metabolism in leaves.
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Affiliation(s)
- Satoru N Kinoshita
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
| | - Takamasa Suzuki
- Department of Biological Chemistry, College of Bioscience and Biotechnology, Chubu University, Kasugai, 487-8501 Japan
| | - Takatoshi Kiba
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8602 Japan
| | - Hitoshi Sakakibara
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8602 Japan
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Structural and Functional Diversity of Two ATP-Driven Plant Proton Pumps. Int J Mol Sci 2023; 24:ijms24054512. [PMID: 36901943 PMCID: PMC10003446 DOI: 10.3390/ijms24054512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/09/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
Two ATP-dependent proton pumps function in plant cells. Plasma membrane H+-ATPase (PM H+-ATPase) transfers protons from the cytoplasm to the apoplast, while vacuolar H+-ATPase (V-ATPase), located in tonoplasts and other endomembranes, is responsible for proton pumping into the organelle lumen. Both enzymes belong to two different families of proteins and, therefore, differ significantly in their structure and mechanism of action. The plasma membrane H+-ATPase is a member of the P-ATPases that undergo conformational changes, associated with two distinct E1 and E2 states, and autophosphorylation during the catalytic cycle. The vacuolar H+-ATPase represents rotary enzymes functioning as a molecular motor. The plant V-ATPase consists of thirteen different subunits organized into two subcomplexes, the peripheral V1 and the membrane-embedded V0, in which the stator and rotor parts have been distinguished. In contrast, the plant plasma membrane proton pump is a functional single polypeptide chain. However, when the enzyme is active, it transforms into a large twelve-protein complex of six H+-ATPase molecules and six 14-3-3 proteins. Despite these differences, both proton pumps can be regulated by the same mechanisms (such as reversible phosphorylation) and, in some processes, such as cytosolic pH regulation, may act in a coordinated way.
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Ueda A, Aihara Y, Sato S, Kano K, Mishiro-Sato E, Kitano H, Sato A, Fujimoto KJ, Yanai T, Amaike K, Kinoshita T, Itami K. Discovery of 2,6-Dihalopurines as Stomata Opening Inhibitors: Implication of an LRX-Mediated H +-ATPase Phosphorylation Pathway. ACS Chem Biol 2023; 18:347-355. [PMID: 36638821 DOI: 10.1021/acschembio.2c00771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Stomata are pores in the leaf epidermis of plants and their opening and closing regulate gas exchange and water transpiration. Stomatal movements play key roles in both plant growth and stress responses. In recent years, small molecules regulating stomatal movements have been used as a powerful tool in mechanistic studies, as well as key players for agricultural applications. Therefore, the development of new molecules regulating stomatal movement and the elucidation of their mechanisms have attracted much attention. We herein describe the discovery of 2,6-dihalopurines, AUs, as a new stomatal opening inhibitor, and their mechanistic study. Based on biological assays, AUs may involve in the pathway related with plasma membrane H+-ATPase phosphorylation. In addition, we identified leucine-rich repeat extensin proteins (LRXs), LRX3, LRX4 and LRX5 as well as RALF, as target protein candidates of AUs by affinity based pull down assay and molecular dynamics simulation. The mechanism of stomatal movement related with the LRXs-RALF is an unexplored pathway, and therefore further studies may lead to the discovery of new signaling pathways and regulatory factors in the stomatal movement.
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Affiliation(s)
- Ayaka Ueda
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yusuke Aihara
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Shinya Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Keiko Kano
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Emi Mishiro-Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Hiroyuki Kitano
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Ayato Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kazuhiro J Fujimoto
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Takeshi Yanai
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kazuma Amaike
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Toshinori Kinoshita
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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6
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Kinoshita SN, Kinoshita T. A win-win scenario for photosynthesis and the plasma membrane H + pump. FRONTIERS IN PLANT SCIENCE 2022; 13:982485. [PMID: 36035713 PMCID: PMC9412029 DOI: 10.3389/fpls.2022.982485] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 07/28/2022] [Indexed: 05/27/2023]
Abstract
In plants, cytosolic and extracellular pH homeostasis are crucial for various physiological processes, including the uptake of macronutrients and micronutrients, cell elongation, cell expansion, and enzyme activity. Proton (H+) gradients and the membrane potential are generated by a H+ pump consisting of an active primary transporter. Plasma membrane (PM) H+-ATPase, a PM-localized H+ pump, plays a pivotal role in maintaining pH homeostasis in plant cells and extracellular regions. PM H+-ATPase activity is regulated by protein abundance and by post-translational modifications. Several stimuli have been found to activate the PM H+-ATPase through phosphorylation of the penultimate threonine (Thr) of the carboxy terminus. Light- and photosynthesis-induced phosphorylation of PM H+-ATPase are conserved phenomena among various plant species. In this work, we review recent findings related to PM H+-ATPase regulation in the photosynthetic tissues of plants, focusing on its mechanisms and physiological roles. The physiological roles of photosynthesis-dependent PM H+-ATPase activation are discussed in the context of nitrate uptake and cytoplasmic streaming in leaves.
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Affiliation(s)
| | - Toshinori Kinoshita
- Graduate School of Science, Nagoya University, Nagoya, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
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7
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McDonald TR, Rizvi MF, Ruiter BL, Roy R, Reinders A, Ward JM. Posttranslational regulation of transporters important for symbiotic interactions. PLANT PHYSIOLOGY 2022; 188:941-954. [PMID: 34850211 PMCID: PMC8825328 DOI: 10.1093/plphys/kiab544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/27/2021] [Indexed: 05/20/2023]
Abstract
Coordinated sharing of nutritional resources is a central feature of symbiotic interactions, and, despite the importance of this topic, many questions remain concerning the identification, activity, and regulation of transporter proteins involved. Recent progress in obtaining genome and transcriptome sequences for symbiotic organisms provides a wealth of information on plant, fungal, and bacterial transporters that can be applied to these questions. In this update, we focus on legume-rhizobia and mycorrhizal symbioses and how transporters at the symbiotic interfaces can be regulated at the protein level. We point out areas where more research is needed and ways that an understanding of transporter mechanism and energetics can focus hypotheses. Protein phosphorylation is a predominant mechanism of posttranslational regulation of transporters in general and at the symbiotic interface specifically. Other mechanisms of transporter regulation, such as protein-protein interaction, including transporter multimerization, polar localization, and regulation by pH and membrane potential are also important at the symbiotic interface. Most of the transporters that function in the symbiotic interface are members of transporter families; we bring in relevant information on posttranslational regulation within transporter families to help generate hypotheses for transporter regulation at the symbiotic interface.
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Affiliation(s)
- Tami R McDonald
- Department of Biology, St Catherine University, St Paul, Minnesota, USA
| | - Madeeha F Rizvi
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, USA
| | - Bretton L Ruiter
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, USA
| | - Rahul Roy
- Department of Biology, St Catherine University, St Paul, Minnesota, USA
| | - Anke Reinders
- College of Continuing and Professional Studies, University of Minnesota, St. Paul, Minnesota, USA
| | - John M Ward
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, USA
- Author for communication:
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El-Adl MF, El-Katony TM, Nada RM. High external Na +, but not K +, stimulates the growth of Ulva lactuca (L.) via induction of the plasma membrane ATPases and achievement of K +/Na + homeostasis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 163:239-249. [PMID: 33866145 DOI: 10.1016/j.plaphy.2021.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
This study aims at investigating the specific ion effects of Na+ and K+ on Ulva lactuca (L.) growth. U. lactuca was grown in balanced nutrient solutions with 10, 100, 300 and 600 mM NaCl or KCl. The growth was significantly higher at 300 and 600 mM NaCl compared to KCl, with the highest growth rate at 300 mM NaCl. NaCl-treated alga showed increases in the photosynthetic pigments and Rubisco protein content. However, KCl treatments adversely affected these photosynthetic attributes. U. lactuca needs adjusted, but not high K+/Na+ ratio for a proper growth, since the high K+/Na+ ratio in KCl-treated alga was associated with growth retardation. The cell wall was more extensible at high concentrations of NaCl compared to KCl. Therefore, the deleterious effect of K+ could be mainly on the cell wall and hence inhibiting the growth and perhaps the vitality of the whole cell. The transcript of plasma membrane (PM) H+-ATPase was detected only at 300 and 600 mM NaCl, implying that this gene was specifically induced by high concentrations of Na+ but not K+. The transcript of PM-Na+/K+-ATPase-like exhibited no Na+ specificity and its induction alone could not improve the growth of KCl-treated U. lactuca. The simultaneous induction of the two PM-ATPases could positively affect the algal growth at high NaCl concentrations by maintaining the proper cellular K+/Na+ ratio. Also, both PM-ATPases might contribute to energizing the plasma membrane and thereby promoting the cellular growth of U. lactuca at high Na+, but not K+, concentrations.
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Affiliation(s)
- Magda F El-Adl
- Department of Botany and Microbiology, Faculty of Science, Damietta University, New Damietta 34517, Egypt.
| | - Taha M El-Katony
- Department of Botany and Microbiology, Faculty of Science, Damietta University, New Damietta 34517, Egypt
| | - Reham M Nada
- Department of Botany and Microbiology, Faculty of Science, Damietta University, New Damietta 34517, Egypt
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9
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Brodribb TJ, Sussmilch F, McAdam SAM. From reproduction to production, stomata are the master regulators. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 101:756-767. [PMID: 31596990 DOI: 10.1111/tpj.14561] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/14/2019] [Accepted: 10/03/2019] [Indexed: 05/22/2023]
Abstract
The best predictor of leaf level photosynthetic rate is the porosity of the leaf surface, as determined by the number and aperture of stomata on the leaf. This remarkable correlation between stomatal porosity (or diffusive conductance to water vapour gs ) and CO2 assimilation rate (A) applies to all major lineages of vascular plants (Figure 1) and is sufficiently predictable that it provides the basis for the model most widely used to predict water and CO2 fluxes from leaves and canopies. Yet the Ball-Berry formulation is only a phenomenological approximation that captures the emergent character of stomatal behaviour. Progressing to a more mechanistic prediction of plant gas exchange is challenging because of the diversity of biological components regulating stomatal action. These processes are the product of more than 400 million years of co-evolution between stomatal, vascular and photosynthetic tissues. Both molecular and structural components link the abiotic world of the whole plant with the turgor pressure of the epidermis and guard cells, which ultimately determine stomatal pore size and porosity to water and CO2 exchange (New Phytol., 168, 2005, 275). In this review we seek to simplify stomatal behaviour by using an evolutionary perspective to understand the principal selective pressures involved in stomatal evolution, thus identifying the primary regulators of stomatal aperture. We start by considering the adaptive process that has locked together the regulation of water and carbon fluxes in vascular plants, finally examining specific evidence for evolution in the proteins responsible for regulating guard cell turgor.
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Affiliation(s)
- Timothy J Brodribb
- School of Natural Sciences, University of Tasmania, Hobart, Tasmania, 7001, Australia
| | - Frances Sussmilch
- Institute for Molecular Plant Physiology and Biophysics, University of Wurzburg, Wuerzburg, Bavaria, Germany
| | - Scott A M McAdam
- Purdue Center for Plant Biology, Purdue University, West Lafayette, IN, USA
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10
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Sussmilch FC, Schultz J, Hedrich R, Roelfsema MRG. Acquiring Control: The Evolution of Stomatal Signalling Pathways. TRENDS IN PLANT SCIENCE 2019; 24:342-351. [PMID: 30797685 DOI: 10.1016/j.tplants.2019.01.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/02/2019] [Accepted: 01/10/2019] [Indexed: 05/24/2023]
Abstract
In vascular plants, stomata balance two opposing functions: they open to facilitate CO2 uptake and close to prevent excessive water loss. Here, we discuss the evolution of three major signalling pathways that are known to control stomatal movements in angiosperms in response to light, CO2, and abscisic acid (ABA). We examine the evolutionary origins of key signalling genes involved in these pathways, and compare their expression patterns between an angiosperm and moss. We propose that variation in stomatal sensitivity to stimuli between plant groups are rooted in differences in: (i) gene presence/absence, (ii) specificity of gene spatial expression pattern, and (iii) protein characteristics and functional interactions.
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Affiliation(s)
- Frances C Sussmilch
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, D-97082 Würzburg, Germany
| | - Jörg Schultz
- Center for Computational and Theoretical Biology, University of Würzburg, D-97218 Würzburg, Germany
| | - Rainer Hedrich
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, D-97082 Würzburg, Germany
| | - M Rob G Roelfsema
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, D-97082 Würzburg, Germany.
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11
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Li Y, Liang C. Exogenous application of Ca 2+ mitigates simulated acid rain stress on soybean productivity and quality by maintaining nutrient absorption. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:4975-4986. [PMID: 30604360 DOI: 10.1007/s11356-018-4034-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
Acid rain is a global environmental problem that threatens agricultural production. Calcium (Ca), as a signal substance for physiological activities, has been known to regulate plant growth under abiotic stresses. To clarify whether calcium could be one of possible ways to alleviate the reduction caused by acid rain in agricultural production and investigate its regulating mechanism on adaptation of plants under acid rain stress, we studied the effect of exogenous Ca2+ (5 mM CaCl2) on growth of soybean at different growth stages (seedling, flowering-podding, and filling stages) as well as yield and grain quality of soybean under simulated acid rain (pH 4.5 or pH 3.0) stress. We found that the application of Ca2+ could regulate the activity of plasma membrane H+-ATPase, for mitigating the increase of ammonium and the decrease of nitrate and phosphorus in soybean roots, which mitigated the inhibition on growth and improved the yield and grain quality of soybean under simulated acid rain stress. In addition, the alleviating effect of exogenous Ca2+ on soybean was the most significant at seedling stage. The results indicate that the exogenous Ca2+ could enhance the adaptation of soybean and facilitate the recovery of soybean productivity and grain quality under simulated acid rain stress by maintaining the uptake of nitrate, ammonium, and phosphorus.
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Affiliation(s)
- Youwei Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Chanjuan Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
- Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Jiangnan University, Wuxi, 214122, China.
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12
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Zhang S, Habets M, Breuninger H, Dolan L, Offringa R, van Duijn B. Evolutionary and Functional Analysis of a Chara Plasma Membrane H +-ATPase. FRONTIERS IN PLANT SCIENCE 2019; 10:1707. [PMID: 32038681 PMCID: PMC6985207 DOI: 10.3389/fpls.2019.01707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 12/04/2019] [Indexed: 05/12/2023]
Abstract
H+-ATPases are the main transporters in plant and fungal plasma membranes (PMs), comparable to the Na+/K+ ATPases in animal cells. At the molecular level, most studies on the PM H+-ATPases have been focused on land plants and fungi (yeast). The research of PM H+-ATPases in green algae falls far behind due to the lack of genetic information. Here we studied a potential PM H+-ATPase (CHA1) from Chara australis, a species of green algae belonging to the division Charophyta, members of which are considered to be one of the closest ancestors of land plants. The gene encodes a 107 kDa protein with all 6 P-type ATPase-specific motifs and a long, diverse C-terminal domain. A new amino acid sequence motif R*****Q in transmembrane segment 5 was identified among the known PM H+-ATPases from Charophyta and Chlorophyta algae, which is different from the typical PM H+-ATPases in yeast or land plants. Complementation analysis in yeast showed that CHA1 could successfully reach the PM, and that proton pump activity was obtained when the last 77 up to 87 amino acids of the C-terminal domain were deleted. PM localization was confirmed in Arabidopsis protoplasts; however, deletion of more than 55 amino acids at the N-terminus or more than 98 amino acids at the C-terminus resulted in failure of CHA1 to reach the PM in yeast. These results suggest that an auto-inhibition domain is located in the C-terminal domain, and that CHA1 is likely to have a different regulation mechanism compared to the yeast and land plant PM H+-ATPases.
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Affiliation(s)
- Suyun Zhang
- Plant Biodynamics Laboratory, Institute of Biology Leiden, Leiden University, Leiden, Netherlands
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, Leiden, Netherlands
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Myckel Habets
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, Leiden, Netherlands
| | - Holger Breuninger
- Department of Plant Sciences, University of Oxford, Oxford, United Kingdom
| | - Liam Dolan
- Department of Plant Sciences, University of Oxford, Oxford, United Kingdom
| | - Remko Offringa
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, Leiden, Netherlands
| | - Bert van Duijn
- Plant Biodynamics Laboratory, Institute of Biology Leiden, Leiden University, Leiden, Netherlands
- Research Department, Fytagoras BV, Leiden, Netherlands
- *Correspondence: Bert van Duijn,
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13
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Inoue SI, Takahashi K, Okumura-Noda H, Kinoshita T. Auxin Influx Carrier AUX1 Confers Acid Resistance for Arabidopsis Root Elongation Through the Regulation of Plasma Membrane H+-ATPase. PLANT & CELL PHYSIOLOGY 2016; 57:2194-2201. [PMID: 27503216 PMCID: PMC5434668 DOI: 10.1093/pcp/pcw136] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 07/28/2016] [Indexed: 05/15/2023]
Abstract
The plant plasma membrane (PM) H+-ATPase regulates pH homeostasis and cell elongation in roots through the formation of an electrochemical H+ gradient across the PM and a decrease in apoplastic pH; however, the detailed signaling for the regulation of PM H+-ATPases remains unclear. Here, we show that an auxin influx carrier, AUXIN RESISTANT1 (AUX1), is required for the maintenance of PM H+-ATPase activity and proper root elongation. We isolated a low pH-hypersensitive 1 (loph1) mutant by a genetic screen of Arabidopsis thaliana on low pH agar plates. The loph1 mutant is a loss-of-function mutant of the AUX1 gene and exhibits a root growth retardation restricted to the low pH condition. The ATP hydrolysis and H+ extrusion activities of the PM H+-ATPase were reduced in loph1 roots. Furthermore, the phosphorylation of the penultimate threonine of the PM H+-ATPase was reduced in loph1 roots under both normal and low pH conditions without reduction of the amount of PM H+-ATPase. Expression of the DR5:GUS reporter gene and auxin-responsive genes suggested that endogenous auxin levels were lower in loph1 roots than in the wild type. The aux1-7 mutant roots also exhibited root growth retardation in the low pH condition like the loph1 roots. These results indicate that AUX1 positively regulates the PM H+-ATPase activity through maintenance of the auxin accumulation in root tips, and this process may serve to maintain root elongation especially under low pH conditions.
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Affiliation(s)
- Shin-Ichiro Inoue
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
| | - Koji Takahashi
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
| | - Hiromi Okumura-Noda
- Department of Biology, Graduate School of Science, Kyushu University, Hakozaki, Fukuoka, 812-8581 Japan
| | - Toshinori Kinoshita
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-8602 Japan
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14
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Toda Y, Wang Y, Takahashi A, Kawai Y, Tada Y, Yamaji N, Feng Ma J, Ashikari M, Kinoshita T. Oryza sativa H+-ATPase (OSA) is Involved in the Regulation of Dumbbell-Shaped Guard Cells of Rice. PLANT & CELL PHYSIOLOGY 2016; 57:1220-30. [PMID: 27048369 PMCID: PMC4904443 DOI: 10.1093/pcp/pcw070] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 03/30/2016] [Indexed: 05/24/2023]
Abstract
The stomatal apparatus consists of a pair of guard cells and regulates gas exchange between the leaf and atmosphere. In guard cells, blue light (BL) activates H(+)-ATPase in the plasma membrane through the phosphorylation of its penultimate threonine, mediating stomatal opening. Although this regulation is thought to be widely adopted among kidney-shaped guard cells in dicots, the molecular basis underlying that of dumbbell-shaped guard cells in monocots remains unclear. Here, we show that H(+)-ATPases are involved in the regulation of dumbbell-shaped guard cells. Stomatal opening of rice was promoted by the H(+)-ATPase activator fusicoccin and by BL, and the latter was suppressed by the H(+)-ATPase inhibitor vanadate. Using H(+)-ATPase antibodies, we showed the presence of phosphoregulation of the penultimate threonine in Oryza sativa H(+)-ATPases (OSAs) and localization of OSAs in the plasma membrane of guard cells. Interestingly, we identified one H(+)-ATPase isoform, OSA7, that is preferentially expressed among the OSA genes in guard cells, and found that loss of function of OSA7 resulted in partial insensitivity to BL. We conclude that H(+)-ATPase is involved in BL-induced stomatal opening of dumbbell-shaped guard cells in monocotyledon species.
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Affiliation(s)
- Yosuke Toda
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, 464-8602 Japan
| | - Yin Wang
- Institute for Advanced Research, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
| | - Akira Takahashi
- Genetically Modified Organism Research Center, National Institute of Agrobiological Sciences, Tsukuba, 305-8602 Japan
| | - Yuya Kawai
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, 464-8602 Japan
| | - Yasuomi Tada
- Center of Gene Research, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
| | - Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046 Japan
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046 Japan
| | - Motoyuki Ashikari
- Bioscience Center, Nagoya University, Chikusa, Nagoya, 464-8601 Japan
| | - Toshinori Kinoshita
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, 464-8602 Japan Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-8602 Japan
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15
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Okumura M, Inoue SI, Kuwata K, Kinoshita T. Photosynthesis Activates Plasma Membrane H+-ATPase via Sugar Accumulation. PLANT PHYSIOLOGY 2016; 171:580-9. [PMID: 27016447 PMCID: PMC4854722 DOI: 10.1104/pp.16.00355] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 03/24/2016] [Indexed: 05/20/2023]
Abstract
Plant plasma membrane H(+)-ATPase acts as a primary transporter via proton pumping and regulates diverse physiological responses by controlling secondary solute transport, pH homeostasis, and membrane potential. Phosphorylation of the penultimate threonine and the subsequent binding of 14-3-3 proteins in the carboxyl terminus of the enzyme are required for H(+)-ATPase activation. We showed previously that photosynthesis induces phosphorylation of the penultimate threonine in the nonvascular bryophyte Marchantia polymorpha However, (1) whether this response is conserved in vascular plants and (2) the process by which photosynthesis regulates H(+)-ATPase phosphorylation at the plasma membrane remain unresolved issues. Here, we report that photosynthesis induced the phosphorylation and activation of H(+)-ATPase in Arabidopsis (Arabidopsis thaliana) leaves via sugar accumulation. Light reversibly phosphorylated leaf H(+)-ATPase, and this process was inhibited by pharmacological and genetic suppression of photosynthesis. Immunohistochemical and biochemical analyses indicated that light-induced phosphorylation of H(+)-ATPase occurred autonomously in mesophyll cells. We also show that the phosphorylation status of H(+)-ATPase and photosynthetic sugar accumulation in leaves were positively correlated and that sugar treatment promoted phosphorylation. Furthermore, light-induced phosphorylation of H(+)-ATPase was strongly suppressed in a double mutant defective in ADP-glucose pyrophosphorylase and triose phosphate/phosphate translocator (adg1-1 tpt-2); these mutations strongly inhibited endogenous sugar accumulation. Overall, we show that photosynthesis activated H(+)-ATPase via sugar production in the mesophyll cells of vascular plants. Our work provides new insight into signaling from chloroplasts to the plasma membrane ion transport mechanism.
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Affiliation(s)
- Masaki Okumura
- Division of Biological Science, Graduate School of Science (M.O., S.I., T.K.), and Institute of Transformative Bio-Molecules (K.K., T.K.), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Shin-Ichiro Inoue
- Division of Biological Science, Graduate School of Science (M.O., S.I., T.K.), and Institute of Transformative Bio-Molecules (K.K., T.K.), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Keiko Kuwata
- Division of Biological Science, Graduate School of Science (M.O., S.I., T.K.), and Institute of Transformative Bio-Molecules (K.K., T.K.), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Toshinori Kinoshita
- Division of Biological Science, Graduate School of Science (M.O., S.I., T.K.), and Institute of Transformative Bio-Molecules (K.K., T.K.), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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16
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Zhang S, de Boer AH, van Duijn B. Auxin effects on ion transport in Chara corallina. JOURNAL OF PLANT PHYSIOLOGY 2016; 193:37-44. [PMID: 26943501 DOI: 10.1016/j.jplph.2016.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 05/26/2023]
Abstract
The plant hormone auxin has been widely studied with regard to synthesis, transport, signaling and functions among the land plants while there is still a lack of knowledge about the possible role for auxin regulation mechanisms in algae with "plant-like" structures. Here we use the alga Chara corallina as a model to study aspects of auxin signaling. In this respect we measured auxin on membrane potential changes and different ion fluxes (K(+), H(+)) through the plasma membrane. Results showed that auxin, mainly IAA, could hyperpolarize the membrane potential of C. corallina internodal cells. Ion flux measurements showed that the auxin-induced membrane potential change may be based on the change of K(+) permeability and/or channel activity rather than through the activation of proton pumps as known in land plants.
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Affiliation(s)
- Suyun Zhang
- Plant Biodynamics Laboratory, Institute Biology Leiden, Leiden University, Sylvius Laboratory, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Albertus H de Boer
- Department of Structural Biology, Faculty Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085-1087, 1081HV Amsterdam, The Netherlands
| | - Bert van Duijn
- Plant Biodynamics Laboratory, Institute Biology Leiden, Leiden University, Sylvius Laboratory, Sylviusweg 72, 2333 BE Leiden, The Netherlands; Fytagoras, Sylvius Laboratory, Sylviusweg 72, 2333 BE Leiden, The Netherlands.
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17
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Falhof J, Pedersen JT, Fuglsang AT, Palmgren M. Plasma Membrane H(+)-ATPase Regulation in the Center of Plant Physiology. MOLECULAR PLANT 2016; 9:323-337. [PMID: 26584714 DOI: 10.1016/j.molp.2015.11.002] [Citation(s) in RCA: 260] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/30/2015] [Accepted: 11/01/2015] [Indexed: 05/21/2023]
Abstract
The plasma membrane (PM) H(+)-ATPase is an important ion pump in the plant cell membrane. By extruding protons from the cell and generating a membrane potential, this pump energizes the PM, which is a prerequisite for growth. Modification of the autoinhibitory terminal domains activates PM H(+)-ATPase activity, and on this basis it has been hypothesized that these regulatory termini are targets for physiological factors that activate or inhibit proton pumping. In this review, we focus on the posttranslational regulation of the PM H(+)-ATPase and place regulation of the pump in an evolutionary and physiological context. The emerging picture is that multiple signals regulating plant growth interfere with the posttranslational regulation of the PM H(+)-ATPase.
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Affiliation(s)
- Janus Falhof
- Department of Plant and Environmental Science, Center for Membrane Pumps in Cells and Disease-PUMPKIN, Danish National Research Foundation, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Jesper Torbøl Pedersen
- Department of Plant and Environmental Science, Center for Membrane Pumps in Cells and Disease-PUMPKIN, Danish National Research Foundation, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Anja Thoe Fuglsang
- Department of Plant and Environmental Science, Center for Membrane Pumps in Cells and Disease-PUMPKIN, Danish National Research Foundation, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Michael Palmgren
- Department of Plant and Environmental Science, Center for Membrane Pumps in Cells and Disease-PUMPKIN, Danish National Research Foundation, University of Copenhagen, 1871 Frederiksberg, Denmark.
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18
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Nguyen TT, Volkening JD, Rose CM, Venkateshwaran M, Westphall MS, Coon JJ, Ané JM, Sussman MR. Potential regulatory phosphorylation sites in a Medicago truncatula plasma membrane proton pump implicated during early symbiotic signaling in roots. FEBS Lett 2015; 589:2186-93. [PMID: 26188545 PMCID: PMC5991090 DOI: 10.1016/j.febslet.2015.06.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/22/2015] [Accepted: 06/24/2015] [Indexed: 10/23/2022]
Abstract
In plants and fungi the plasma membrane proton pump generates a large proton-motive force that performs essential functions in many processes, including solute transport and the control of cell elongation. Previous studies in yeast and higher plants have indicated that phosphorylation of an auto-inhibitory domain is involved in regulating pump activity. In this report we examine the Medicago truncatula plasma membrane proton pump gene family, and in particular MtAHA5. Yeast complementation assays with phosphomimetic mutations at six candidate sites support a phosphoregulatory role for two residues, suggesting a molecular model to explain early Nod factor-induced changes in the plasma membrane proton-motive force of legume root cells.
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Affiliation(s)
- Thao T Nguyen
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Biotechnology Center, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Jeremy D Volkening
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Biotechnology Center, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Christopher M Rose
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Muthusubramanian Venkateshwaran
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI 53706, United States; School of Agriculture, University of Wisconsin-Platteville, Platteville, WI 53818, United States
| | - Michael S Westphall
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Joshua J Coon
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Jean-Michel Ané
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Michael R Sussman
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Biotechnology Center, University of Wisconsin-Madison, Madison, WI 53706, United States.
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19
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Hayashi Y, Takahashi K, Inoue SI, Kinoshita T. Abscisic acid suppresses hypocotyl elongation by dephosphorylating plasma membrane H(+)-ATPase in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2014; 55:845-53. [PMID: 24492258 DOI: 10.1093/pcp/pcu028] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Plasma membrane H(+)-ATPase is thought to mediate hypocotyl elongation, which is induced by the phytohormone auxin through the phosphorylation of the penultimate threonine of H(+)-ATPase. However, regulation of the H(+)-ATPase during hypocotyl elongation by other signals has not been elucidated. Hypocotyl elongation in etiolated seedlings of Arabidopsis thaliana was suppressed by the H(+)-ATPase inhibitors vanadate and erythrosine B, and was significantly reduced in aha2-5, which is a knockout mutant of the major H(+)-ATPase isoform in etiolated seedlings. Application of the phytohormone ABA to etiolated seedlings suppressed hypocotyl elongation within 30 min at the half-inhibitory concentration (4.2 µM), and induced dephosphorylation of the penultimate threonine of H(+)-ATPase without affecting the amount of H(+)-ATPase. Interestingly, an ABA-insensitive mutant, abi1-1, did not show ABA inhibition of hypocotyl elongation or ABA-induced dephosphorylation of H(+)-ATPase. This indicates that ABI1, which is an early ABA signaling component through the ABA receptor PYR/PYL/RCARs (pyrabactin resistance/pyrabactin resistance 1-like/regulatory component of ABA receptor), is involved in these responses. In addition, we found that the fungal toxin fusiccocin (FC), an H(+)-ATPase activator, induced hypocotyl elongation and phosphorylation of the penultimate threonine of H(+)-ATPase, and that FC-induced hypocotyl elongation and phosphorylation of H(+)-ATPase were significantly suppressed by ABA. Taken together, these results indicate that ABA has an antagonistic effect on hypocotyl elongation through, at least in part, dephosphorylation of H(+)-ATPase in etiolated seedlings.
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Affiliation(s)
- Yuki Hayashi
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602 Japan
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20
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Abstract
The plasma membrane H(+)-ATPase is the pump that provides the driving force for transport of numerous solutes in plant cells, and plays an essential role for the growth and maintenance of cell homeostasis. Recent investigations using guard cells with respect to blue-light-induced stomatal opening uncovered the regulatory mechanisms of the H(+)-ATPase, and revealed that the phosphorylation status of penultimate threonine in the C-terminus of H(+)-ATPase is key step for the activity regulation. The same regulatory mechanisms for the H(+)-ATPase were evidenced in hypocotyl elongation in response to ABA and auxin, suggesting that the phosphorylation of the penultimate threonine is a common regulatory mechanism for the H(+)-ATPase. We also present the data that the activity of the H(+)-ATPase limits the plant growth. Typical structure of the H(+)-ATPase in the C-terminus was acquired in the transition of plants from water to the terrestrial land.
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Affiliation(s)
- Yin Wang
- Institute for Advanced Research, Nagoya University, Nagoya, Japan; Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya, Japan
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21
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O’Donoghue MT, Chater C, Wallace S, Gray JE, Beerling DJ, Fleming AJ. Genome-wide transcriptomic analysis of the sporophyte of the moss Physcomitrella patens. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:3567-81. [PMID: 23888066 PMCID: PMC3745722 DOI: 10.1093/jxb/ert190] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Bryophytes, the most basal of the extant land plants, diverged at least 450 million years ago. A major feature of these plants is the biphasic alternation of generations between a dominant haploid gametophyte and a minor diploid sporophyte phase. These dramatic differences in form and function occur in a constant genetic background, raising the question of whether the switch from gametophyte-to-sporophyte development reflects major changes in the spectrum of genes being expressed or alternatively whether only limited changes in gene expression occur and the differences in plant form are due to differences in how the gene products are put together. This study performed replicated microarray analyses of RNA from several thousand dissected and developmentally staged sporophytes of the moss Physcomitrella patens, allowing analysis of the transcriptomes of the sporophyte and early gametophyte, as well as the early stages of moss sporophyte development. The data indicate that more significant changes in transcript profile occur during the switch from gametophyte to sporophyte than recently reported, with over 12% of the entire transcriptome of P. patens being altered during this major developmental transition. Analysis of the types of genes contributing to these differences supports the view of the early sporophyte being energetically and nutritionally dependent on the gametophyte, provides a profile of homologues to genes involved in angiosperm stomatal development and physiology which suggests a deeply conserved mechanism of stomatal control, and identifies a novel series of transcription factors associated with moss sporophyte development.
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Affiliation(s)
| | - Caspar Chater
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK
| | - Simon Wallace
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Julie E. Gray
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK
| | - David J. Beerling
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Andrew J. Fleming
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
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